40812222 has 32 divisors (see below), whose sum is σ = 92119680. Its totient is φ = 11940320.

The previous prime is 40812199. The next prime is 40812227. The reversal of 40812222 is 22221804.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40812227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8748 + ... + 12575.

It is an arithmetic number, because the mean of its divisors is an integer number (2878740).

Almost surely, 2^40812222 is an apocalyptic number.

40812222 is an abundant number, since it is smaller than the sum of its proper divisors (51307458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40812222 is a wasteful number, since it uses less digits than its factorization.

40812222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21368.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 40812222 is about 6388.4444115919. Note that the first 4 decimals coincide. The cubic root of 40812222 is about 344.2944960993.

The spelling of 40812222 in words is "forty million, eight hundred twelve thousand, two hundred twenty-two".